Appreciate the problem to understand the solution

It is almost funny that very often I was badly stuck with a problem and searched high and low for ways out, only to find that something that I have always known is 'the' solution. But that moment is a real 'ah-ha' moment. The thing that I know is still the same as what I have always known, but now I understand what the problem is and have a profound appreciation of it. I realize in life there is never a lack of solutions. So-called the solutions are abundant and easily available, but they are of no value to people until they truly experience the problem and appreciate it. Then all of sudden, that always-known common sense becomes a precious solution.